This problem requires more test cases. My solution as many others would fail for a case in which the searched substring is not ordered.
Finding Perfect Squares
Replace NaNs with the number that appears to its left in the row.
Scoring for oriented dominoes
Determine if input is a perfect number
Let's see how peculiar we can get
FIFA World Cup 2014 : Offside
birthday on same day of week
Construct a precedence graph from a code segment
Collaborative Fun : Nomination
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